Film charging device for use with cinematographic cameras and projectors



1934- c. E. HlLLERY-COLLINGS 1,960,082

FILM CHARGING DEVICE FOR USE WITH GINEMATOGRAPHIC CAMERAS AND PROJECTORSFiled June 9, 1953 CHARLES EDWARD HlLLERY-COLLING5 INVENTOR BY Z g (y/ATTORNEYS Patented May 22, 19354 SATES FILM CHARGING DEVKCE FOR USE WITHCINEMATOGRAPHIC CAMERAS AND PRO- JECTQRS Application June 9, 1933,Serial No. 674,921 In Great Britain March 15, 1932 3 Claims.

This invention relates to film charging devices for use withcinematographic cameras and projectors, of the kind in which two similartrays are connected together by means of tongues cut out of the fiatbottoms of the trays, the tongues on each tray fitting into the slots inthe other tray left by the cutting of the tongues, each of the trayshaving an opening through which the film could be wound from a spool inone tray on to a spool in another tray.

According to the present improvement, the tongues which are located indiametrically opposite positions on the tray bottoms, each tongue beingspaced 90 degrees from the centre of the film openings in the two trayswhen united, or from a point midway between the extreme limits of thetwo openings When they are not coincident are so placed that thetwotrays can be united by relative rotation instead of sliding onediametrically on to the other.

In order that the said invention may be clearly understood and readilycarried into elfect, the same will now be described more fully withreference to the accompanying drawing wherein Figures 1 and 2 representin plan the upper and lower trays in one example of the application ofthe invention.

Figures 3 and 4 represent in plan upper and lower trays in anotherexample.

Figure 5 is an elevation of the two trays represented in Figures 3 and4.

It will be understood that in use the coupled trays may be either sideby side in a vertical position, or superimposed in a horizontal positionas shown in Figure 5.

In the form shown in Figures 1 and 2, A indicates the upper tray whichis provided with tongues a and the film opening a while B indicates thelower tray having tongues b and the film opening b The outer faces ofthe trays may be cut away as shown at a and also have openings a whichexpose only such portions of the tray thus revealed to wear and tear,the thickness of the outer faces of the tray A in this form thereof 45."tending to partly protect the tongues from blows or accidental contactwith objects, while the tongues in the opposite trays neverthelessproject sufficiently to mutually engage each other.

Openings a render visible the tongues a formed 50. in the inner faceswhen the trays are empty.

In the other form of the trays shown in Figures 3 to 5, the trays C andD have tongues c and al similar to tongues a and b of the firstmentioned trays A and B. As may be noted particularly in Figure 3, thecut out portion 0 may be considerably narrower in tray C than the cutout portion a of tray A.

The trays made according to either form of the invention are placed incontact and the upper tray rotated in the direction indicated by the up-9 per arrow seen in Figure 1 to bring the tongues into engagement.

In Figures 1 and 2, the film opening of the upper tray is of the samewidth as the film opening of the lower tray and directly above thelatter opening. The base or Widest part of each tongue a and b islocated on a radial line at right angles or to the radial line from thecentre of the tray to the centre of the film opening. Tongues a and bare thus disposed on a radial line in each case.

In Figures 3 to 5, where the film openings 0 and d are staggered, theroots of the tongues c and d are located on a radial line at rightangles to the radial line from the centre of the tray to the meetingpoint of the two openings.

The trays are partly rotated together when they are to be superimposed,and due to the fact that the tongues on each tray are directed in thesame direction of rotation, the trays will accurately register in mutualjuxtaposition when the tongues in one tray engage those in the other.

The tongues may be of semicircular or other suitable rounded shapeinstead of being pointed as shown.

The improvements are applicable to pairs of trays for winding on and 01ffilm for projection which is not sensitive and for which it is notnecessary to provide both inner and outer trays.

What I claim and desire to secure by Letters Patent of the United Statesis:-

1. In a film charging device for use with cinematographic cameras andprojectors, said device comprising two circular trays having flatbottoms, a pair of tongues partly cut out in each of the said flatbottoms, said tongues facing in opposite directions and leaving slots insaid flat bottoms, the widest part of each of said tongues and slotsbeing located on a radius of the tray, the tongues on each tray beingadapted to register in the slots in the other of said trays when the twotrays are juxtaposed and relatively rotated to bring their respectivetongues and slots into absolutely accurate engagement with respect tothe centers of said trays, so that both trays are accuratelysuperimposed and are thereby adapted to simultaneously fit perfectly inposition upon said cameras or projectors and thus prevent leakage oflight into the same past the circumferential edge of no either of saidtrays.

2. A device according to claim 1 having film exit and inlet openingsformed in the annular walls of the two trays, while the widest part ofeach tongue is spaced about 90 degrees from the 5 joint centre of saidopenings when the trays are united.

3. A device according to claim 1 having film

